They usually have the medicine_______ before putting into the market all over the country.
#95721
A
testing out
B
to be tested out
C
being tested out
D
tested out
推荐题目
Without facts,we can’t form a correct opinion,for we need to have actual knowledge______our thinking.
#98472
A
which to be based on
B
which to base on
C
on which to base
D
which to base
_______ is better to love than _______.
#95655
A
That; to be loved
B
That; be loved
C
It; be loved
D
It; to be loved